nixpkgs/pkgs/development/interpreters/python/build-python-package-setuptools.nix
Frederik Rietdijk 1623c8371c buildPythonPackage: rename nix_run_setup.py to nix_run_setup
If the extension is .py it tends to be picked up by tools, breaking for
example tests.
2018-01-20 13:31:14 +01:00

57 lines
1.6 KiB
Nix

# This function provides specific bits for building a setuptools-based Python package.
{ lib
, python
, bootstrapped-pip
}:
{
# passed to "python setup.py build_ext"
# https://github.com/pypa/pip/issues/881
setupPyBuildFlags ? []
# Execute before shell hook
, preShellHook ? ""
# Execute after shell hook
, postShellHook ? ""
, ... } @ attrs:
let
# use setuptools shim (so that setuptools is imported before distutils)
# pip does the same thing: https://github.com/pypa/pip/pull/3265
setuppy = ./run_setup.py;
in attrs // {
# we copy nix_run_setup over so it's executed relative to the root of the source
# many project make that assumption
buildPhase = attrs.buildPhase or ''
runHook preBuild
cp ${setuppy} nix_run_setup
${python.interpreter} nix_run_setup ${lib.optionalString (setupPyBuildFlags != []) ("build_ext " + (lib.concatStringsSep " " setupPyBuildFlags))} bdist_wheel
runHook postBuild
'';
installCheckPhase = attrs.checkPhase or ''
runHook preCheck
${python.interpreter} nix_run_setup test
runHook postCheck
'';
# Python packages that are installed with setuptools
# are typically distributed with tests.
# With Python it's a common idiom to run the tests
# after the software has been installed.
doCheck = attrs.doCheck or true;
shellHook = attrs.shellHook or ''
${preShellHook}
if test -e setup.py; then
tmp_path=$(mktemp -d)
export PATH="$tmp_path/bin:$PATH"
export PYTHONPATH="$tmp_path/${python.sitePackages}:$PYTHONPATH"
mkdir -p $tmp_path/${python.sitePackages}
${bootstrapped-pip}/bin/pip install -e . --prefix $tmp_path >&2
fi
${postShellHook}
'';
}